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| author | Florian Westphal <fw@strlen.de> | 2016-07-04 16:22:20 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-07-08 23:08:39 -0400 |
| commit | bba7eb5d9b4ebccacd30331121ee29764212a29d (patch) | |
| tree | f14f32051ed7e9266c1117425d4904b5097cbf15 /net/sched/sch_hfsc.c | |
| parent | a90a6e55f34f28190e4dc2a6a3660ef157827a8f (diff) | |
| download | linux-stable-bba7eb5d9b4ebccacd30331121ee29764212a29d.tar.gz linux-stable-bba7eb5d9b4ebccacd30331121ee29764212a29d.tar.bz2 linux-stable-bba7eb5d9b4ebccacd30331121ee29764212a29d.zip | |
hfsc: reduce hfsc_sched to 14 cachelines
hfsc_sched is huge (size: 920, cachelines: 15), but we can get it to 14
cachelines by placing level after filter_cnt (covering 4 byte hole) and
reducing period/nactive/flags to u32 (period is just a counter,
incremented when class becomes active -- 2**32 is plenty for this
purpose, also, long is only 32bit wide on 32bit platforms anyway).
cl_vtperiod is exported to userspace via tc_hfsc_stats, but its period
member is already u32, so no precision is lost there either.
Cc: Michal Soltys <soltys@ziu.info>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_hfsc.c')
| -rw-r--r-- | net/sched/sch_hfsc.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c index dff92ea772fe..3ddc7bd74ecb 100644 --- a/net/sched/sch_hfsc.c +++ b/net/sched/sch_hfsc.c @@ -115,9 +115,9 @@ struct hfsc_class { struct gnet_stats_basic_packed bstats; struct gnet_stats_queue qstats; struct gnet_stats_rate_est64 rate_est; - unsigned int level; /* class level in hierarchy */ struct tcf_proto __rcu *filter_list; /* filter list */ unsigned int filter_cnt; /* filter count */ + unsigned int level; /* class level in hierarchy */ struct hfsc_sched *sched; /* scheduler data */ struct hfsc_class *cl_parent; /* parent class */ @@ -165,10 +165,10 @@ struct hfsc_class { struct runtime_sc cl_virtual; /* virtual curve */ struct runtime_sc cl_ulimit; /* upperlimit curve */ - unsigned long cl_flags; /* which curves are valid */ - unsigned long cl_vtperiod; /* vt period sequence number */ - unsigned long cl_parentperiod;/* parent's vt period sequence number*/ - unsigned long cl_nactive; /* number of active children */ + u8 cl_flags; /* which curves are valid */ + u32 cl_vtperiod; /* vt period sequence number */ + u32 cl_parentperiod;/* parent's vt period sequence number*/ + u32 cl_nactive; /* number of active children */ }; struct hfsc_sched { |